نتایج جستجو برای: beta basis function

تعداد نتایج: 1693426  

Journal: :iranian journal of science and technology (sciences) 2014
h. rasooli shooroki

in this paper, the static characteristics of two-lobe, three-lobe and four-lobe noncircular gas journal bearing systems are studied in detail. the reynold’s equation governing the noncircular gas bearing systems are analyzed by using radial basis functions (rbf). the solutions are obtained numerically by solving systems of algebraic equations. the equilibrium position of the rotor is obtaine...

2000
M. Bozzini L. Lenarduzzi M. Rossini R. Schaback

Under very mild additional assumptions, translates of conditionally positive definite radial basis functions allow unique interpolation to scattered multivariate data, because the interpolation matrices have a symmetric and positive definite dominant part. In many applications, the data density varies locally, and then the translates should get different scalings that match the local data densi...

2010
Ko-Yun Liu Wan-Chun Ma Jackson Lee Chuan-Chang Wang Chun-Fa Chang

The main purpose of the proposed technique is to allow a blendshape rig to create facial expressions that are independent from the underlying blendshape poses. [JTDP03] proposed an automatic segmentation technique to divide the face into regions that have similar amount of deformation. Each region finds its best blendshape weights that conforms to the motion capture data and then propagates the...

Journal: :SIAM J. Scientific Computing 2011
Bengt Fornberg Elisabeth Larsson Natasha Flyer

Radial basis function (RBF) approximation is an extremely powerful tool for representing smooth functions in non-trivial geometries, since the method is meshfree and can be spectrally accurate. A perceived practical obstacle is that the interpolation matrix becomes increasingly illconditioned as the RBF shape parameter becomes small, corresponding to flat RBFs. Two stable approaches that overco...

2011
Kyriaki Kitikidou Lazaros S. Iliadis

This paper aims in comparing countries with different energy strategies, and demonstrate the close connection between environment and economic growth in the ex-Eastern countries, during their transition to market economies. We have developed a radial-basis function neural network system, which is trained to classify countries based on their emissions of carbon, sulphur and nitrogen oxides, and ...

Journal: :J. Comput. Physics 2012
Cécile Piret

Much work has been done on reconstructing arbitrary surfaces using the radial basis function (RBF) method, but one can hardly find any work done on the use of RBFs to solve partial differential equations (PDEs) on arbitrary surfaces. In this paper, we investigate methods to solve PDEs on arbitrary stationary surfaces embedded in R3 using the RBF method. We present three RBF-based methods that e...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2001
Hongping Liu V. Chandrasekar Eugenio Gorgucci

Detection of rain/no-rain condition on the ground is an important for application of radar rainfall algorithms. A radial basis function (RBF) neural network-based scheme for rain/no-rain determination on the ground using vertical profiles of radar data is described in this paper. Evaluation based on WSR-88D radar over central Florida indicates that rain/no-rain condition can be inferred fairly ...

Journal: :Journal of Approximation Theory 2010
Richard K. Beatson Oleg Davydov Jeremy Levesley

We present error bounds for the interpolation with anisotropically transformed radial basis functions for both function and its partial derivatives. The bounds rely on a growth function and do not contain unknown constants. For polyharmonic basic functions in R we show that the anisotropic estimates predict a significant improvement of the approximation error if both the target function and the...

Journal: :SIAM J. Numerical Analysis 2005
Rodrigo B. Platte Tobin A. Driscoll

Abstract. We explore a connection between Gaussian radial basis functions and polynomials. Using standard tools of potential theory, we find that these radial functions are susceptible to the Runge phenomenon, not only in the limit of increasingly flat functions, but also in the finite shape parameter case. We show that there exist interpolation node distributions that prevent such phenomena an...

Journal: :Neurocomputing 2009
Kwang-Baek Kim Sungshin Kim

On page 8 of the paper (page 3209 of the volume), in the seventh line of the second-to-last paragraph of section 5.

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